Combined gas and solid-fuel range.



G. A. TINNERMAN. COMBINED GAS AND SOLID FUEL RANGE.

, APPLICATION FILED APR- 7, 1913. 7 1,217,531. Patented Feb. 27,1917.

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COMBINED GAS AND SOLID FUEL RANGE.

Patentd Feb. 27, 1917 3 SHEETS-SHEET 3.

APPLICATION FILED APR. 1, 19I3.

GEORGE A. TINNERMAN, OF CLEVELAND, OHIO.

COMBINED GAS AND SQLIID-FUEL RANGE.

Specification of Letters Patent.

Patented Feb. 27, 1917.

Application filed April 7, 1913. Serial No. 759,282.

To all whom it may concern:

Be it known that I, GEORGE A. TINNER- MAN, a citizen of the UnitedStates of America, residing at Cleveland, in the county of Cuyahoga andState of Ohio, have invented certain new and useful Improvements inCombined Gas and Solid-Fuel Ranges, of which the following is aspecification. 7 Y

My invention relates to improvements in a combined. gas and solid fuelrange, and more particularly to the construction, arrangement andconnection of the bowlburners employed therein. The object of myinvention is to provide a range of this type with burners which willinterfere as little as possible with the use of solid fuel, whileobtaining the maximum efliciency and utility for the gas-burningmembers.

In ranges of this type, the preferred arrangement involves the use oftwo bowlburners, which are positioned at the front of the range, and aresupplied with lateral connections for the access of gas and air to theburners. course, are required for the purpose of protecting the burnersfrom the accumulation of soot and ashes, while avoiding the deflectionof the gas flames by the draft, and necessarily obstruct the top flue ofthe range, while the air and gas connections ordinarily block the fluealong the front of the range. Accordingly, I have provided an improvedconstruction, wherein the bowl burners are individually provided withair ducts, situated beneath the top flue of the range, while the gasconnections are inducted from the end of the range in a manner toobstruct the top flue thereof, as little as possible. Moreover, inranges of this character, it is desirable that the gas burners may beused either with the ordinary stove lid in position, or with the openflame. Bearing these conditions also in mind, I have providedcontrollable vents in the bowls connecting with the top flue of therange, which are positioned peripherally of the bowl, in the top rimencircling the same, whereby the flame and products of combustion arespread for the purpose of insuring an even and efficient heating action.Finally, I have mounted. the bowlsv and lids in a' manner to avoidimpair- .ing the draft of the range. The detailsof The individual bowls,of'

my improved construction, may be readily explained, by referring to theaccompanying drawings, wherein Figure 1, -is a fragmentary view,partially broken away of a simple type of range embodying myimprovement.

Fig. 2, is a similar view of the same, shown principally in verticalsection. I

Fig, 3, shows another vertical. section taken at right angles to that ofFig. 2.

Figs. t and 5, respectively, show a bowl and its rotatable slide in.perspective.

Figs. 6 and 7, respectively,-are plan and sectional views on line w-w,of the star burner.

Figs. 8, 9 and 10, respectively, are top, end and side views. of theindividualboX or air draft for the bowl burner, and

Figs. 11 and 12, respectively, are top and vertical sectional viewspartially broken away, of a combined gas and solid fuel range of thedown-draft type, embodying my improvements.

The same character of reference is employed throughout the severalfigures of the drawings to indicate similar parts.

My improvements, or certain portions thereof, may be applied to variousstyles of solid fuel ranges, as indicated in the accompanying drawings,although said improvements are primarily designed for use in connectionwith ranges having upper,

down-draft and bottom flues surrounding the ovens thereof.'Referring'first to Fig; 1, there is shown. a. solid fuel range havingtwo cooking holes, one or both of which may be removably equipped withmy improved bowl burner. In Fig; 2 the third cooking hole with its lid,is fragmentally shown upon the right, immediately above the fire box at.

These cooking holes may be designated in order, as b, c and (Z. Thebowls c are of identical construction. Each .is provided with a centralbottom open-ingv e registering with: the boxed air-draft f, and itsopening f, disposed beneath the top flue a. Each bowl is provided with aflanged rim e having controllable vents e peripherally positioned withrespect to the body of the bowl, and an annular channel 6",, foraccommodating the. top section, j and lid 9. A separate revoluble slide6- is positioned above the: in.-

terior porti n of the flange, a c nt ins registering openings 6,corresponding to those of the bowl. (See Figs. 4: and 5). By rotatingthe slide-member with respect to the bowl, it is apparent that theopenings from the bowl into the top flue may be controlled-or altogetherclosed, as desired.

Within each bowl, is provided a starburner, connected either directlywith the air mixer and gas valve 1', or intermediately, by means of aslightly bent length of pipe v1. Said star burner h preferably is spacedabove the bottom of the bowl, by means of lugs 72., while the center ofthe burner is provided with an opening h, substantially registering withthe bottom opening 6, whereby the free circulation of air is insuredabout the burner.

Referring more particularly to Figs. 2 and 3, it will be seen that anadequatevair supply is constantly assured for supporting combustion andeffecting cooking, either with an open flame, or through the stove lidpositioned upon the bowl. I have endeavored to indicate, by means ofarrows, the direction or course taken by the air, before and aftercombustion. The controllable vents e serve evenly to deflect the heatedgases before their exitinto the upper flue a, and the same are readilyregulated by means of the revoluble slide 6". Thus the maximum heatingeffect for a given volume of gas con sumed, may be individuallyregulated, with 1 respect to each burner, and one may have a full gasand airsupply, while the other is restricted as to both.

It will further be observed, upon referring to Figs. 2 and 3, that thetop section 7' is provided with a substantially L-shaped annular flangey" about the cooking holes, which fits closely within the exteriorchanneled rim 0*, and this construction, affording relatively wideengaging surfaces, as it does, serves to permit of a readily separableconnection between the bowl and top section; while affording practicallyno leakage for the external air to reach the top flue.

The bowl burners shown in Figs. 11 and 12, are of substantially the sameconstruction already described, but are of slightly smaller size toadapt them for more compact disposition in the down-draft range thereinshown. Three relatively longer vents e and registering openings 6 areprovided respectively in the top of the bowl and slide. These bowls arepositioned in the top flue a, communicating with the fire-box a upon theleft, and the down-draft flue a upon the right. Individual boxedair-drafts f, are also provided for the bowls, and burners. The rangeherein shown and described, permits of the independent use of gas andcoal, or other solid fuel; the former commonly being used until the coalfire has started. The individual slides of the bowl burners may beregulated to avoid interfering with the draft through the fire box, aslittle as possible, while the avoidance of transverse connections andpositioning of the bowls in alinement contribute to freeing the top fluefrom obstructions, as far as possible. The .1

bowls themselves are constructed to avoid any deflecting lateralcurrents of air, so that the heating effect is as even and equal aspossible, and the vents, being positioned periph orally of the body ofthe bowl, and preferably within the upper flanged rim thereof, are notinterfered with when the burner is used for heating pots, as they aresupported upon the upstanding rim adjacent to said vents.

I Having now described the preferred embodiments of my invention, Iclaim as new and desire to secure by Letters Patent, the following 1. Ina convertible range, the combination with an annularly flanged cookinghole thereof, of a bowl comprising an open bottom construction and a.horizontally flanged riln ")rovided with two upstaru'ling annular ribsfitting beneath said flanged. cooking hole, and a gas-burner positionedwithin said bowl, substantially as set forth.

2. In a convertible range, the combination with a cooking hole thereof,of a bowl insertible therein comprising a partially open bottom, flaringsides and a horizontal flange provided with annular vents adjacent tothe top of said bowl, and a gas-burner positioned within the bowl,substantially as set forth.

8. The combination with a solid fuel range, having a grate at one endthereof, and a connecting upper flue, of a bowl positioned beneath oneof the front cooking holes, and within said flue; said bowl having abottom opening, and a peripheral flange provided with controllable ventsconnecting with the upper flue, an air-draft disposed beneath said upperflue and connecting with the bowl, a gas burner within said bowl, and agas connection extending from the end of the range opposite the grate tosaid gas burner within the bowl, substantially as set forth.

4:. The combination with a solid fuel range, of a bowl disposed beneatha cooking hole thereof; the same having a channeled rim and ahorizontally flanged top provided with vents, an air-draft connectingwith the bottom of the bowl, a gas burner within the bowl, and a gassupply pipe connected to the burner, substantially as set forth.

5. The combination with a solid fuel range, of a bowl having a bottomdraft opening and upper vents annularly provided in a plane parallelwith the bottom, positioned in a cooking hole thereof and extendingwithin the top flue, an individual air-draft connected with the bottomof the bowl and positioned beneath said top flue, a gas burner withinsaid bowl and a connection extending to the burner for supplying amixture of gas and air thereto, substantially as set forth.

6. The combination with a solid fuel range, of convertible memberspositioned within the top flue thereof, each comprising a bowl removablypositioned beneath a front cooking-hole of said range and provided witha horizontal annular flange having upper peripheral vents communicatingwith the flue of the range and a bottom draftopening, a burner removablypositioned Within the bowl, a gas supply pipe extending to said burner,and an air draft positioned beneath the flue and connecting with thebottom opening in the bowl, substantially as set forth.

In testimony whereof I do now aiiix my seal and signature in thepresenceof two witnesses.

GEORGE A. TINNERMAN. [L. s.]

Witnesses:

' A. H. TINNERMAN,

ALBERT LYNN LAWRENCE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

